Chromium, molybdenum and tungsten

Holder, Alvin A.

doi:10.1039/b918379p

Cited by 1 publication

(1 citation statement)

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“…16 Among the various d o transition metal peroxo systems, V(V), Mo(VI) and W(VI), which have clear structural and isoelectronic relationships, attract continuous research attention because of their versatility and selectivity as stoichiometric or catalytic oxidizing or oxo-transfer agent in a variety of organic oxidations such as epoxidation of alkenes, [17][18][19][20] oxidation of sulfides and sulfoxides, [21][22][23][24][25][26] primary and secondary alcohols, 27,28 as well as halide oxidation. [29][30][31][32] Besides these, the active involvement or relevance of these peroxometallates in haloperoxidase, 29,31,32 their insulino-mimetic, [33][34][35][36] anti-neoplastic 37 and enzyme inhibitory activity 38,39 have been well documented. The vanadium-dependent bromoperoxidase (V-BPO) is now the subject of tremendous interest for chemists as well as biologists.…”

Section: Introductionmentioning

confidence: 99%

Macromolecular peroxo complexes of Vanadium(V) and Molybdenum(VI): Catalytic activities and biochemical relevance

Islam

Boruah

2015

J Chem Sci

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Our recent achievements concerning the synthesis and characterization of water soluble peroxo complexes of V(V) and Mo(VI) in macroligand environment, as well as some key features of biological relevance of these compounds, such as their hydrolytic stability, activity with phosphohydrolase enzyme vis-à-vis free peroxovanadium (pV) or peroxomolybdenum (pMo) complexes, and their activity in biomimetic oxidative bromination are presented here. Immobilization of pMo species on insoluble polymer matrices viz., amino acid functionalized Merrifield resins and poly(acrylonitrile) on the other hand, afforded a set of heterogeneous catalysts highly effective in facile organic transformations such as selective oxidation of organic sulfides and oxidative bromination of aromatic substrates by H 2 O 2 , at ambient temperature. The methodologies are straightforward, high-yielding, halogen-free and the catalysts afford easy regeneration. Our findings illustrate the various features which make the procedures sustainable and synthetically useful.

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